Table1:

Patient characteristics

Patient Characteristics
Number of patients	3855
Age mean (sd)	61.3 (15.4)
Female n (%)	1207 (31.3)
Witnessed n(%)	3061 (79.4)
European center n(%)	1520 (39.4)
Shockable Rhythm n(%)	2040 (52.9)
Medical diagnosis (median [IQR])	2 [0, 3]
Bystander CPR n(%)	2546 (66.0)
Time to ROSC (mean (sd))	26.2 (18.0)
Defibrillation n(%)	2472 (64.1)
Hospital CPC 1–2 n(%)	1,325 (34.4)

CPR = cardiopulmonary resuscitation; CPC = cerebral performance category; ROSC = return of spontaneous circulation